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| author |   Hugh Dickins <hugh.dickins@tiscali.co.uk> | 2010-03-05 13:42:25 -0800 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@linux-foundation.org> | 2010-03-06 11:26:27 -0800 |
| commit | 08259d58e4fa12ceaece82193c5816152f638cca (patch) | |
| tree | 8c032914139c5aec362a73b8316cf81f020f9f8f /kernel/panic.c | |
| parent | nommu: get_user_pages(): pin last page on non-page-aligned start (diff) | |
| download | wireguard-linux-08259d58e4fa12ceaece82193c5816152f638cca.tar.xz wireguard-linux-08259d58e4fa12ceaece82193c5816152f638cca.zip | |
mm: add comment on swap_duplicate's error code
swap_duplicate()'s loop appears to miss out on returning the error code
from __swap_duplicate(), except when that's -ENOMEM. In fact this is
intentional: prior to -ENOMEM for swap_count_continuation,
swap_duplicate() was void (and the case only occurs when copy_one_pte()
hits a corrupt pte). But that's surprising behaviour, which certainly
deserves a comment.
Signed-off-by: Hugh Dickins <hughd@google.com>
Reported-by: Huang Shijie <shijie8@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'kernel/panic.c')
0 files changed, 0 insertions, 0 deletions